Of chicago



H. S. PARDEE.

LOCKING CAP FDR AUTOMOBILE RADIATORS. APPLICATION FILED APR.25. 1921.

Patented July 11, 1922.

gig? I7 E "29 I E WIIYVEETORI M firm/way 55 3 i the adapterhas aperipher'al groove 11, the

ing claims.

the threads of the neck.

UNITED sires PATET GFFICE.

HARVEY s. PAEDEE, or onrcaeo, 'inninois, assicinor. ro MILLER & PARZDEE, inc,

OE CHIGAGO, ILLINOIS, A CORPORATION ILLINOIS.

LOCKING GA]? FOB. AUTOMOBILE RADIATORS ineaeve.

Specification of Letters latent.

Patented July 11, 1922.

Application filed April 25, 1921. Serial No.464,324.

To all whom it may concern:

Be it known that I, HARVEY S. PARDEE, a citizen of the United States, and a resident of Chicago, county of Cook, State of Illinois, have invented an Improvement in Looking Caps for Automobile Radiators, of which the following is a specification.

This invention relates to mechanical apparatus, and with regard to certain more specific features, to, a radiator cap for automobiles.

Among the several objects of the invention may be noted the provision of a simple and durable cap; the provision of an inexpensive and compact locking device; and the provision of an'eii ective andreliable device for looking a cap against displacement and at the same'time insuring a tight connection between the cap and the member upon which it is mounted. Other objects will be in part obvious and in part pointed out hereinafter.

. "Theinvention accordingly comprisesthe features of construction, combinations of elements, and arrangements ofparts which are exemplified in the construction hereinafter described, and thescope of the application of which will be indicated in the follow- In the accompanying drawings, in which is "illustrated one of various possible embodimentsof the invention,

Fig. 1. is airontelevation, partly in" section on the line 1-..1 of Fig. 2; v Fig. 2 is a plan, partly in section. on the line 22 oflFig. 1;.and a Fig. is a'transverse vertical section'on the line 3-3of Fig. 2.v 1 Similar reference characters indicate corresponding parts. throughout the several views of the drawings;

- Referring now more particularly to Fig. 1, there is illustrated at 7 an annular meinher, in thisinstance so-called neck of an automobile radiator." I v The present invention may be applied to many it not all typeset neck ingeneral use at the present time. An adapter inember 9 of suitable diameter to fit upon the neck 7 is] provided with threads cooperating with In the present in stance the neck is shown as having external threads, so that the adapter isprovided with internal threads cooperating therewith.

Above the portion carrying the threads,

upper lateral edge of which is beveled as indicated at 13. Suitable means such as a locking screw 15 (Fig. 1) are provided in order to secure the adapter in fixed position upon the neck 7.

The adapter at its upper end is provided with .a shoulder 17 (Figs. 1 and 3), the upper edge of which is peaned over to form a peripheral groove 18 to retain in position a fiat metal ring 19, in this instance a thin copper ring, rotatably mounted within said peripheral groove 18.

Mounted upon the adapter is a cap 21. This cap has a forwardly extending cylindrical bore23 for the reception of a lock barrel 25 which contains tumbler mechanism (not shown) of: any suitable type. When a proper. key (not shown) is inserted inthe keyhole 27 (Fig. 1) the tumblers are drawn. into the bolt 29 and it is possible to rotate the bolt within the barrel.

In the illustrated embodiment of the invention, the bolt is threaded in the barrel, as is indicated in Fig. 3. Assuming the lock to be in engaging or looking position, as in Fig. 3, the bolt maybe rotated counterclockwise (Fig. 1), thereby shifting the bolt toward theright in Fig. 3 with respect to the cap. 4 Such rotation of the bolt is limited by a steelcollar 31 (Fig. 3) secured upon the inner end 01 the bolt, and 01 large enough diameter to abut against the inner annular end of the barrel 25. This is for the purpose of preventing removal of the bolt from thejbarreL.

When the bolt has been rotated'far enough toward the right in Fig. 3 to bring it out of the recess 11 in the adapter member, the cap 21 may be removed from the adapter member by lifting the former upward.

When the device is to be assembled and looked upon the neck the adapter member is first threaded into position upon the neck, and is securedthereon by means of a set screw 15 (Fig. 1). The metal ring 19 is already in place upon the adapter. A yielding gasket or washer 35, preferably oi. rubher, is in the cap. The cap has a thermometer or other suitable device 36 secured thereon by means 38 inaccessible from the outside of the cap. The lock bolt is in its unlocking position. The cap is slipped downwardly upon the adapter. The lock bolt is then rotated clockwise (Fig. 1) to force it toward the left (Fig. 3) with respect to the cap. During such motion the bolt enters the peripheral groove 11 in the adapter member, and forces thecap toward the right (Fi 3) thereby causing the beveled upper sur ace 37 (Figs. 2 and 3) of the project-ion 39 on the cap to ride downwardly upon the adjacent portion of the upper beveled edge- 13 of the groove 11 in the adapter member, and thus forcing that portion of the cap downward upon the adapter member. At the same time, the co-action of the inner beveled surface 41 of the bolt with the adjacent beveled upper edge 13 of the groove 11 in the adapter member also forces that portion of the cap downwardly upon the adapter member. A further result of this movement of the bolt in looking direction is, that the cap is locked u on the adapter member, by the co-action o thebolt and the projection 39 with the groove 11.

This downward movement of the cap against the adapter member compressesthe gasket 35 and forms a tight joint between adapter member and ca Once the bolt has reached its locking position (Fig. 3) and the key has been removed, it is not possible to displace the bolt. The cap is thus securely locked against removal from the adapter, and the thermometer cannot be removed.

In addition to the pro'ection 39, two projections 43 (Figs. 1 an 2), one on either side of the bore 45 of the cap, are provided, to serve as guides for the movement of the cap toward the right and left (Fig. 2) with respect to the adapter, and to reduce or eliminate side play between such parts. These projections offer only a comparatively small amount of friction to oppose relative movement of cap and adapter memben.

When the cap is in placeand looked upon the adapter member, rotation of the cap does not disengage the lock. Such rotation of the cap merel causes rotation of the gasket 35 and ring 1 As the metal ring is'rotatably mounted upon the adapter member, the ring simply rotates with respect. thereto, And since the groove 11 extends entirely around the adapter memben rotat ion of the cap and hence of the lock boltvand projection 39 can take place indefinitely, these parts simply sliding around the beveled up per surface 13 of the groove 11.

In viewof the above, it will be seen that the several objects of the invention are 81;- tained and other advantageous results achieved.

As m y modifications might be made of the embb diment above set forth, without departing from the spirit or scope of the present invention, it is to be understood that the above description and the accompanying drawings are to be interpreted as illustrative and not in a limitingsense.

I claim: v 1. In apparatusof the class desoribed,in

combination, a cap, a lock in the cap, comprising a bolt, an annular member on which the cap fits, means rotatably mounted upon the annular member, a compressible gasket positioned between said means and said cap, whereby the rotation of the cap upon the annular member rotates simply the gasket and said means, the movement of the bolt into locking position serving to secure the cap against removal from the annular member and also compressing the gasket to form a tight joint between the cap and the annular member.

2. In apparatus of the class described, in combination, a cap adapted to fit upon an annular member and a apted to be rotated indefinitely thereupon, a lock in the cap having a bolt; an adapter member adapted to be secured upon said first member, the'cap fittin upon said adapter member, means rotatabIy mounted upon the adapter member, a compressible gasket positioned between said means and said cap, whereby the rotation of the cap upon the adapter member merely rotates the asket and said means, the movement of the bolt into locking position serving to secure the cap a ainst removal from the adapter member an also compressing the gasket to form a tight joint between cap and adapter member. a v

3. In apparatus of the class deseribed, in combination, a cap adapted to fit upon the neck of an automobile radiator and ada ted to be rotated indefinitely thereupon, $500k in the cap, comprising a bolt longitudinally movable into and out of locking position, key-released tumbler mechanism adapted to hold said bolt in position, an annular adapt-- or member adapted to be secured upon said neck and provided with a peripheral groove having an upper beveled e means comprising one or more bevele projections in the cap adapted to engage said edge when the bolt is in locking position, the bolt having a beveled inner surface engaging said edge when in locking position, aflat metal ring rotatably mounte upon the upper surface oi the adapter membeqa oompressible gasket positioned between said ring and said cap, whereby the rotation of the cap upon. the adapter mnmber rotates merely the gasket and ring, th bol and projection then rotating in the groove, the movement of the bolt into locking serving to secure the capagainst removal from the adapter member and. also new pressing the gasket to form a tight joint between cap and adapter membfll'l means preventing or limiting side-play between class 1'30 combination, a cap adapted to fit upon the neck of an automobile radiator, and adapted to be rotated indefinitely thereupon, an annular member adapted to be secured upon said neck and located between the neck and cap, means for securing the annular member against removal from the neck, means for locking the cap against removal from the annular member, avflat metal ring rotatably mounted upon the upper surface of the annular member, and a compressible gasket positioned between said ring and said cap, whereby the rotation of the cap upon the annular member rotates merely the gasket and ring.

5. In apparatus of the class described, in combination, a cap adapted to fit upon the neck of an automobile radiator, an annular member adapted to be secured upon said neck and located between the neck and cap, means for securing the annular member against removal from the neck, means for locking the cap against removal from the annular member, a flat metal ring rotatably mounted upon the upper surface of the annular member, and a compressible gasket positioned between said ring and said cap.

6. In apparatus of the class described, in combination, a cap adapted to fit upon the neck of an automobile radiator, an annular member adapted to be secured upon said neck and located between the neck and cap, means for securing the annular member against removal from the neck, means for locking the cap against removal from the annular member, a fiat metal ring rotatably mounted upon an annular surface of the annular member, said surface being adjacent to an annular surface on the cap, a compressible gasket positioned between said ring and said cap, a device mounted upon the cap, and means for securing said device thereupon, said means being inaccessible when the cap is in service.

In testimony whereof, I have signed my name to this specification this 28d day of April, 1921.

HARVEY s. PARDEE. 

